CN106311855B - Two-sided hydraulic forming device for sheet metal - Google Patents
Two-sided hydraulic forming device for sheet metal Download PDFInfo
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- CN106311855B CN106311855B CN201510387684.XA CN201510387684A CN106311855B CN 106311855 B CN106311855 B CN 106311855B CN 201510387684 A CN201510387684 A CN 201510387684A CN 106311855 B CN106311855 B CN 106311855B
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Abstract
The invention discloses a kind of two-sided hydraulic forming device for sheet metal, including oil supply system, the first high pressure needle valve, the second high pressure needle valve, upper die and lower die and fuel tank, upper die and lower die are symmetrically distributed in the both sides of sheet metal to be processed, and oil supply system is connected with upper die and lower die respectively by high-pressure oil pipe；First high pressure needle valve is connected with fuel tank and upper mould respectively, and the second high pressure needle valve is connected with lower mould and oil supply system respectively.It is the advantage of the invention is that simple in construction, easy for installation；Using soft drift and cavity plate to shape causes sheet moulding performance to improve, and two-sided shaped by fluid pressure is can be carried out for the 0.1mm of thickness 0.01 thin plate.
Description
Technical field
The invention belongs to hydraulic molding technique, and in particular to a kind of two-sided hydraulic forming device for sheet metal.
Background technology
Board hydraulic forming technique is by the use of plate as former material, makes it to fixed mold by applying fluid pressure to plate
It is plastically deformed in die cavity, sheet material is bonded with mould inner surface, so as to obtains the forming technique of required Shape Parts.In recent years
Come, due to the fast development of automobile and aircraft industry, the material and baroque part of a large amount of cold forming poor performances obtain
Increasing application, this provides opportunity for the development of sheet Metal Hydro-forming.Sheet metal hydroforming is as a kind of advanced
Processing technology, have the characteristics that die cost is low, die manufacturing cycle is short, forming limit is high, compared with traditional handicraft, liquid
Pressing formation has both saved the energy, reduces cost, has adapted to small lot, the flexible developing direction of multi items of current product again,
By the consistent concern of countries in the world scholar, wherein for thin plate again because its thickness direction size is small, forming property is poor, so
It is significant to improve sheet moulding performance.
German scholar S.Novotny etc. have studied magnesium alloy and aluminium alloy hydraulic pressure hot forming, based on material properties test, carry
High-temperature, different magnesium, the material property behavior of aluminium alloy are different, have studied the reasonable forming technology of respective material, are allowed to shape
Performance is obviously improved, and obtains higher perfect reduction of area and elongation percentage.It is molded using hydraulic pressure to forming technique, but warms shaping
（300℃）Pressure will reach 350Mpa, high for seal request, potential safety hazard otherwise be present.Young tiger of Harbin Institute of Technology Jiang ten thousand
Back pressure drawing and forming device is warmed etc. have developed sheet material, the device includes drawing system, heating system, cooling system and back pressure system
System etc..In addition to traditional drawing function, it can also realize to the active control of granule medium pressure and to sheet material flange
Uniformly heating.Back pressure is mainly pressurized by solid particle to realize, solid particle does back pressure and is relatively adapted to warm shaping, but right
The shaping of thin plate has little significance, and can not radially pressurize.
The middle title of a reigning dynasty 201110157894.1 discloses《A kind of method for improving Forming Limit of Sheet Metals》, i.e. sheet material Bidirectional-pressure
Topping up and mild hot formation method, this method can largely improve the forming limit of sheet material, but not have radial direction pressurization function.
The middle title of a reigning dynasty 201210080123.1 discloses《A kind of device for improving Forming Limit of Sheet Metals and utilization device raising sheet material forming
The method of the limit》, solve existing with because cavity plate topping up room pressure increases, causing to hang during sheet material forming part
The thinned and anti-inflation rupture of dead zone formation of parts local excessive, the restricted problem of sheet material forming, but cavity plate topping up room pressure is not
It is variable, without radial direction pressurization function.The middle title of a reigning dynasty 201410065771.9 discloses《A kind of sheet material flexible multipoint forming device》, into
Shape active force real-time, tunable, but structure is more complicated, and size is larger, feasible for large-sized sheet material, but the shaping meaning to thin plate
It is adopted little.The middle title of a reigning dynasty 200510047029.6 discloses《A kind of board hydraulic or pneumatic shaping method and device》, according to will be into
The part bed-plate dimension processing backing plate of shape, regulation are placed on mobile unit group's constituent part bottom profile in matrix cavity, will padded
Plate is placed on mobile unit group, and blank is placed on the die socket for forming matrix cavity, matrix cavity sectional dimension and part section
Identical, pressing plate flanging is used above in blank, and hydraulic pressure or air pressure import out of pressing plate, driving blank deformation and matrix cavity side wall and can
The backing plate fitting of moving cell group support, the part of shape needed for shaping.It is feasible for large-sized sheet material but structure is more complicated, but
It is that shaping to thin plate has little significance.
The content of the invention
It is an object of the invention to provide a kind of two-sided hydraulic forming device for sheet metal, it can effectively improve gold
The plastic forming ability of metal thin plate, especially for the shaping of 0.01-0.1mm sheet metals.
The technical solution for realizing the object of the invention is：A kind of two-sided hydraulic forming device for sheet metal, bag
Include oil supply system, the first high pressure needle valve, the second high pressure needle valve, upper die and lower die and fuel tank, upper die and lower die and be symmetrically distributed in be added
The both sides of the sheet metal of work, oil supply system are connected with upper die and lower die respectively by high-pressure oil pipe；First high pressure needle valve is distinguished
It is connected with fuel tank and upper mould, the second high pressure needle valve is connected with lower mould and oil supply system respectively.
The upper mould top center is provided with the first through hole of a variable diameters, and first through hole larger diameter end is upper cavity, greatly
Diameter end is located at upper mould bottom, and smaller diameter end is connected by high-pressure oil pipe with oil supply system；First through hole at the top of above mould is
Center, N number of 6th through hole are evenly distributed at the top of mould, 3≤N≤8, and a phase vertical with first through hole is provided with upper mould side wall
The second logical through hole, the second through hole are connected by high-pressure oil pipe with fuel tank, and the first high pressure needle is provided between high-pressure oil pipe and fuel tank
Valve；A third through-hole communicated vertical with the second through hole, the axis of third through-hole and the axis of first through hole are provided with upper mould
Parallel, third through-hole one end communicates with the second through hole, and the other end runs through upper mould bottom.
The lower mould top center is provided with the fourth hole of a variable diameters, and fourth hole larger diameter end is lower mode cavity, position
At the top of lower mould, and overlapped with the upper cavity of upper mould bottom, the other end is connected by high-pressure oil pipe with oil supply system；Following mould top
Centered on the fourth hole in portion, M the 7th through holes are evenly distributed at the top of lower mould, axis and the upper mould of M=N, M the 7th through holes
N number of 6th through hole axis respectively correspond to overlap；Be provided with lower mould side wall one it is vertical with fourth hole communicate it is the 5th logical
Hole, fifth hole are connected by high-pressure oil pipe with oil supply system, and the second high pressure needle valve is provided between high-pressure oil pipe and oil supply system,
Wherein fifth hole does not communicate with the 7th through hole.
The oil supply system includes PLC touch screen integrated machines, hydraulic station, booster, check valve and electromagnetic relief valve, PLC
Touch screen integrated machine is connected with hydraulic station by electric wire, and hydraulic station, booster, check valve are sequentially connected by high-pressure oil pipe, electricity
Magnetic overflow valve is connected with PLC touch screen integrated machines by electric wire, and check valve is connected by high-pressure oil pipe with the first through hole of upper mould,
Snap joint is provided between high-pressure oil pipe and first through hole, gives upper cavity fuel feeding；Second high pressure needle valve is by high-pressure oil pipe with
The fifth hole of mould is connected, and snap joint is provided between the fifth hole of high-pressure oil pipe and lower mould, gives lower mode cavity fuel feeding；Lower mould
Fourth hole lower end is connected by quick union with high-pressure oil pipe one end, and the other end of high-pressure oil pipe is connected with electromagnetic relief valve,
Electromagnetic relief valve is controlled by PLC touch screen integrated machines, electromagnetic relief valve outlet connected tank；Second through hole of upper mould by connecing soon
Head is connected with the first high pressure needle valve, the first high pressure needle valve outlet connected tank.
The sheet metal to be processed is located between the fourth hole at the top of the first through hole and lower mould of upper mould bottom, and
The third through-hole of mould is not blocked.
The first through hole and sheet metal contact position to be processed are provided with rounding, the fourth hole and to be processed
Sheet metal contact position is provided with rounding.
Sheet metal to be processed is formed with being arranged with the first sealing ring on the contact surface at the top of upper mould bottom and lower mould
Dynamic sealing；The second sealing ring is provided between the land area of upper die and lower die, forms static seal, and the second sealing ring is located at threeway
Between hole and upper mould outer wall.
Mould is provided with the lower mode cavity of the lower mould.
Compared with prior art, its remarkable advantage is the present invention：
（1）Realize the two-sided shaped by fluid pressure that thickness is 0.01-0.1mm sheet metals.
（2）Soft drift, cavity plate shaping greatly improve sheet metal formability.
（3）During metal sheet, sheet metal can radially be pressed, improve the mouldability of sheet metal
Energy.
（4）Electromagnetic relief valve is accurately controlled by PLC touch screen integrated machines, allow high-pressure oil pipe export pressure according to
It is required that change, so as to reach the accurate control to loading curve in Sheet Metal Forming, while causes radial direction moulding pressure
It is variable, controllable.
（5）Mould of different shapes is put into lower mode cavity, is molded part of different shapes.
（6）Because upper die and lower die symmetry is good, forward and reverse superplastic forming can be carried out.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the two-sided hydraulic forming device proposed by the present invention for sheet metal.
Fig. 2 is the top view of the two-sided hydraulic forming device proposed by the present invention for sheet metal.
Fig. 3 is C-C sectional views in Fig. 2.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
With reference to Fig. 1, a kind of two-sided hydraulic forming device for sheet metal, including oil supply system, the first high pressure needle valve
6-1, the second high pressure needle valve 6-2, upper mould 7, lower mould 8 and fuel tank 9, upper mould 7 and lower mould 8 are symmetrically distributed in sheet metal to be processed
19 both sides, oil supply system are connected with upper mould 7 and lower mould 8 respectively by high-pressure oil pipe.First high pressure needle valve 6-1 respectively with fuel tank
9 and upper mould 7 connect, the second high pressure needle valve 6-2 is connected with lower mould 8 and oil supply system respectively.
With reference to Fig. 2 and Fig. 3, the first through hole 11 of a variable diameters is provided with along the upper top center of mould 7, first through hole 11 is straight greatly
Footpath end is upper cavity, and larger diameter end is located at the upper bottom of mould 7, and smaller diameter end is connected by high-pressure oil pipe with oil supply system；Above mould 7
Centered on the first through hole 11 at top, N number of 6th through hole 12 is evenly distributed at the top of mould 7,3≤N≤8, is opened in the upper side wall of mould 7
There is second through hole 13 communicated vertical with first through hole 11, the second through hole 13 is connected by high-pressure oil pipe with fuel tank 9, high pressure
The first high pressure needle valve 6-1 is provided between oil pipe and fuel tank 9.Second through hole 13 does not communicate with the 6th through hole 12.One is provided with upper mould 7
It is individual that the axis of third through-hole 10 is parallel with the axis of first through hole 11 with the 13 vertical third through-hole 10 communicated of the second through hole,
The one end of third through-hole 10 communicates with the second through hole 13, and the other end runs through the upper bottom of mould 7.
The lower top center of mould 8 is provided with the fourth hole 15 of a variable diameters, and the larger diameter end of fourth hole 15 is lower mode cavity, position
In the lower top of mould 8, and overlapped with the upper cavity of the upper bottom of mould 7, the other end is connected by high-pressure oil pipe with oil supply system.Mould is set
Put in lower mode cavity.Centered on the fourth hole 15 at the following top of mould 8, M the 7th through holes 16 are evenly distributed on the lower top of mould 8, M
The axis of=N, M the 7th through holes 16 and the corresponding coincidence respectively of the axis of N number of 6th through hole 12 of upper mould 7.Opened in the lower side wall of mould 8
There is a fifth hole 14 communicated vertical with fourth hole 15, fifth hole 14 is connected by high-pressure oil pipe with oil supply system,
The second high pressure needle valve 6-2 is provided between high-pressure oil pipe and oil supply system, wherein fifth hole 14 does not communicate with the 7th through hole 16.
Sheet metal 19 to be processed be located at the upper bottom of mould 7 first through hole 11 and the top of lower mould 8 fourth hole 15 it
Between, and the third through-hole 10 of mould 7 is not blocked.First through hole 11 is provided with rounding with the contact position of sheet metal 19 to be processed,
Fourth hole 15 is provided with rounding with the contact position of sheet metal 19 to be processed.Contact position set rounding be used for prevent sheet material into
Stress concentration during type, the second through hole 13 are used to be vented.Sheet metal 19 to be processed pushes up with the upper bottom of mould 7 and lower mould 8
On the contact surface in portion, the first sealing ring 18 is arranged with, forms dynamic sealing.Second is provided between the land area of upper mould 7 and lower mould 8
Sealing ring 17, form static seal.Second sealing ring 17 is located between third through-hole 10 and the outer wall of upper mould 7.
Oil supply system includes PLC touch screen integrated machines 1, hydraulic station 2, booster 3, check valve 4 and electromagnetic relief valve 5, PLC
Touch screen integrated machine 1 is connected with hydraulic station 2 by electric wire, and hydraulic station 2, booster 3, check valve 4 pass through high-pressure oil pipe successively phase
Even, electromagnetic relief valve 5 is connected with PLC touch screen integrated machines 1 by electric wire, and PLC touch screen integrated machines 1 are by controlling hydraulic station 2
Output pressure, hydraulic oil is pressurized after the output of hydraulic station 2 by booster 3, then through threeway, is entered all the way through check valve 4 upper
Die cavity, i.e. check valve 4 are connected by high-pressure oil pipe with the first through hole 11 of upper mould 7, are set between high-pressure oil pipe and first through hole 11
There is snap joint, give upper cavity fuel feeding, the hydraulic oil in upper cavity serves as drift, as soft drift.Another way is through the second high pressure
Needle-valve 6-2 enters lower mode cavity, i.e. the second high pressure needle valve 6-2 is connected by high-pressure oil pipe with the fifth hole 14 of lower mould 8, hydraulic oil
Snap joint is provided between pipe and the fifth hole 14 of lower mould 8, gives lower mode cavity fuel feeding.
The lower end of fourth hole 15 of lower mould 8 is connected by quick union with high-pressure oil pipe one end, the other end of high-pressure oil pipe
It is connected with electromagnetic relief valve 5, electromagnetic relief valve 5 is controlled by PLC touch screen integrated machines 1, and electromagnetic relief valve 5 exports connected tank 9.On
Second through hole 13 of mould 7 is connected by quick union with the first high pressure needle valve 6-1, the first high pressure needle valve 6-1 outlets connected tank 9.
Embodiment 1
Exemplified by processing thickness as 0.1mm sheet metal.Used light sheet material is 304 stainless steels, thin plate section
For circle, a diameter of 16mm, thickness 0.1mm.
With reference to Fig. 1, a kind of two-sided hydraulic forming device for sheet metal, including oil supply system, the first high pressure needle valve
6-1, the second high pressure needle valve 6-2, upper mould 7, lower mould 8 and fuel tank 9, upper mould 7 and lower mould 8 are symmetrically distributed in sheet metal to be processed
19 both sides, oil supply system are connected with upper mould 7 and lower mould 8 respectively by high-pressure oil pipe.First high pressure needle valve 6-1 respectively with fuel tank
9 and upper mould 7 connect, the second high pressure needle valve 6-2 is connected with lower mould 8 and oil supply system respectively.
With reference to Fig. 2 and Fig. 3, the first through hole 11 of a variable diameters is provided with along the upper top center of mould 7, first through hole 11 is straight greatly
Footpath end is upper cavity, and larger diameter end is located at the upper bottom of mould 7, and smaller diameter end is connected by high-pressure oil pipe with oil supply system；Above mould 7
Centered on the first through hole 11 at top, four the 6th through holes 12 are evenly distributed on the top of mould 7, the upper side wall of mould 7 in cruciform symmetry
On be provided with second through hole 13 communicated vertical with first through hole 11, the second through hole 13 is connected by high-pressure oil pipe with fuel tank 9,
The first high pressure needle valve 6-1 is provided between high-pressure oil pipe and fuel tank 9.One is provided with upper mould 7 with the second through hole 13 vertical to communicate
Third through-hole 10, the axis of third through-hole 10 is parallel with the axis of first through hole 11, the one end of third through-hole 10 and the second through hole
13 communicate, and the other end runs through the upper bottom of mould 7.
The lower top center of mould 8 is provided with the fourth hole 15 of a variable diameters, and the larger diameter end of fourth hole 15 is lower mode cavity, position
In the lower top of mould 8, and overlapped with the upper cavity of the upper bottom of mould 7, the other end is connected by high-pressure oil pipe with oil supply system.Following mould
Centered on the fourth hole 15 at 8 tops, four the 7th through holes 16 are evenly distributed at the top of lower mould 8 in cruciform symmetry, four the 7th
Through hole 16 overlaps with the 6th through hole 12 of upper mould 7.Be provided with the lower side wall of mould 8 one it is vertical with fourth hole 15 communicate it is the 5th logical
Hole 14, fifth hole 14 are connected by high-pressure oil pipe with oil supply system, and the second high pressure is provided between high-pressure oil pipe and oil supply system
Needle-valve 6-2.
Sheet metal 19 to be processed be located at the upper bottom of mould 7 first through hole 11 and the top of lower mould 8 fourth hole 15 it
Between, and the third through-hole 10 of mould 7 is not blocked.First through hole 11 is provided with rounding with the contact position of sheet metal 19 to be processed,
Fourth hole 15 is provided with rounding with the contact position of sheet metal 19 to be processed.Contact position set rounding be used for prevent sheet material into
Stress concentration during type, the second through hole 13 are used to be vented.Sheet metal 19 to be processed and the upper bottom of mould 7 and the top of lower mould 8
Contact surface on, be arranged with the first sealing ring 18, form dynamic sealing.It is close that second is provided between the land area of upper mould 7 and lower mould 8
Seal 17, form static seal.Second sealing ring 17 is located between third through-hole 10 and the outer wall of upper mould 7.
Oil supply system includes PLC touch screen integrated machines 1, hydraulic station 2, booster 3, check valve 4 and electromagnetic relief valve 5, PLC
Touch screen integrated machine 1 is connected with hydraulic station 2 by electric wire, and hydraulic station 2, booster 3, check valve 4 pass through high-pressure oil pipe successively phase
Even, electromagnetic relief valve 5 is connected with PLC touch screen integrated machines 1 by electric wire, and PLC touch screen integrated machines 1 are by controlling hydraulic station 2
Output pressure, hydraulic oil is pressurized after the output of hydraulic station 2 by booster 3, then through threeway, is entered all the way through check valve 4 upper
Die cavity, i.e. check valve 4 are connected by high-pressure oil pipe with the first through hole 11 of upper mould 7, are set between high-pressure oil pipe and first through hole 11
There is snap joint, give upper cavity fuel feeding, the hydraulic oil in upper cavity serves as drift, as soft drift.Another way is through the second high pressure
Needle-valve 6-2 enters lower mode cavity, i.e. the second high pressure needle valve 6-2 is connected by high-pressure oil pipe with the fifth hole 14 of lower mould 8, hydraulic oil
Snap joint is provided between pipe and the fifth hole 14 of lower mould 8, gives lower mode cavity fuel feeding.
The lower end of fourth hole 15 of lower mould 8 is connected by quick union with high-pressure oil pipe one end, the other end of high-pressure oil pipe
It is connected with electromagnetic relief valve 5, electromagnetic relief valve 5 is controlled by PLC touch screen integrated machines 1, and electromagnetic relief valve 5 exports connected tank 9.On
Second through hole 13 of mould 7 is connected by quick union with the first high pressure needle valve 6-1, the first high pressure needle valve 6-1 outlets connected tank 9.
Workflow is as follows：
Make mould 7 and the lower matched moulds of mould 8 first, for 8 more preferable matched moulds of upper mould 7 and lower mould, divide on upper mould 7 and lower mould 8
Guide pillar hole is not provided with, under the guiding and positioning action of guide pillar, then mounting screw, so upper mould 7 and lower mould 8 can just close well
Mould, after completing matched moulds, oil supply system and upper mould 7, lower mould 8 are all connected by quick union, first step oil supply system passes through
First through hole 11 on upper mould 7 gives the preliminary fuel feeding of upper cavity, gives the preliminary fuel feeding of lower mode cavity by the fifth hole 14 of lower mould 8, just
The process of step fuel feeding is also the pressure after being full of hydraulic oil of a process of the air discharge allowed in die cavity, upper cavity and lower mode cavity
Be kept at 2Mpa, hydraulic oil pass sequentially through first through hole 11, the second through hole 13, third through-hole 10 enter the first sealing ring 18,
Toroidal cavity between second sealing ring 17, radial thrust is formed to sheet material.After the upper and lower preliminary fuel feeding of die cavity, it is high to close first
Pressing valve 6-1, oil supply system adjust the pressure of upper cavity by adjusting hydraulic station, and the radial thrust suffered by sheet material is also with upper
The change in pressure of die cavity, and the pressure of lower mode cavity is by controlling the pressure of electromagnetic relief valve 5 to adjust.So sheet material two sides
Pressure can all change, as long as keeping certain pressure difference, just can make plate forming, and this kind of plate can be drawn by experiment
The best condition of molding of material.
The plastic forming ability of sheet material can be significantly improved using this two-sided hydraulic forming device for sheet metal,
Compared with traditional one side hydroforming process, the crystallized ability of sheet metal can improve 15% or so.
The present invention can realize the shaped by fluid pressure of thickness 0.01-0.1mm sheet metals；Using PLC touch screen integrated machines pair
Fuel injection system and sheet material double face pressure are controlled, and compared with traditional manually operated control, PLC controls are more accurate, reliable,
Response speed is faster.Also, the two-sided hydraulic forming device for being used for sheet metal measures hydraulic oil using high pressure sensor
Pressure in pipe, the measurement accuracy than traditional reading type instrument is higher, more accurately.
Because upper mould 7 and the lower symmetry of mould 8 are good, therefore the present invention can carry out forward and reverse superplastic forming.
Claims (6)
- A kind of 1. two-sided hydraulic forming device for sheet metal, it is characterised in that：Including oil supply system, the first high pressure needle valve （6-1）, the second high pressure needle valve（6-2）, upper mould（7）, lower mould（8）And fuel tank（9）, upper mould（7）With lower mould（8）It is symmetrically distributed in and treats The sheet metal of processing（19）Both sides, oil supply system by high-pressure oil pipe respectively with upper mould（7）With lower mould（8）Connection；First High pressure needle valve（6-1）Respectively with fuel tank（9）With upper mould（7）Connection, the second high pressure needle valve（6-2）Respectively with lower mould（8）And fuel feeding System connects；The upper mould（7）Top center is provided with the first through hole of a variable diameters（11）, first through hole（11）On larger diameter end is Die cavity, larger diameter end are located at upper mould（7）Bottom, smaller diameter end are connected by high-pressure oil pipe with oil supply system；Above mould（7）Top First through hole（11）Centered on, N number of 6th through hole（12）It is evenly distributed on mould（7）Top, 3≤N≤8, upper mould（7）Side wall On be provided with one and first through hole（11）The second through hole vertically communicated（13）, the second through hole（13）Pass through high-pressure oil pipe and fuel tank （9）It is connected, high-pressure oil pipe and fuel tank（9）Between be provided with the first high pressure needle valve（6-1）；Upper mould（7）One is inside provided with second to lead to Hole（13）The third through-hole vertically communicated（10）, third through-hole（10）Axis and first through hole（11）Axis it is parallel, Three through holes（10）One end and the second through hole（13）Communicate, the other end runs through upper mould（7）Bottom；The lower mould（8）Top center is provided with the fourth hole of a variable diameters（15）, fourth hole（15）Under larger diameter end is Die cavity, positioned at lower mould（8）Top, and with upper mould（7）The upper cavity of bottom overlaps, and the other end passes through high-pressure oil pipe and oil supply system It is connected；Following mould（8）The fourth hole at top（15）Centered on, M the 7th through holes（16）It is evenly distributed on lower mould（8）Top, M =N, M the 7th through holes（16）Axis and upper mould（7）N number of 6th through hole（12）Axis respectively correspond to overlap；Lower mould（8） One and fourth hole are provided with side wall（15）The fifth hole vertically communicated（14）, fifth hole（14）By high-pressure oil pipe with Oil supply system is connected, and the second high pressure needle valve is provided between high-pressure oil pipe and oil supply system（6-2）, wherein fifth hole（14）Not with 7th through hole（16）Communicate.
- 2. the two-sided hydraulic forming device according to claim 1 for sheet metal, it is characterised in that：The fuel feeding system System includes PLC touch screen integrated machines（1）, hydraulic station（2）, booster（3）, check valve（4）And electromagnetic relief valve（5）, PLC touches Shield all-in-one（1）With hydraulic station（2）It is connected by electric wire, hydraulic station（2）, booster（3）, check valve（4）Pass through high-pressure oil pipe It is sequentially connected, electromagnetic relief valve（5）With PLC touch screen integrated machines（1）It is connected by electric wire, check valve（4）Pass through high-pressure oil pipe With upper mould（7）First through hole（11）It is connected, high-pressure oil pipe and first through hole（11）Between be provided with snap joint, give upper cavity supply Oil；Second high pressure needle valve（6-2）Pass through high-pressure oil pipe and lower mould（8）Fifth hole（14）It is connected, high-pressure oil pipe and lower mould（8） Fifth hole（14）Between be provided with snap joint, give lower mode cavity fuel feeding；Lower mould（8）Fourth hole（15）Lower end by connecing soon Joint is connected with high-pressure oil pipe one end, the other end and electromagnetic relief valve of high-pressure oil pipe（5）It is connected, electromagnetic relief valve（5）By PLC Touch screen integrated machine（1）Control, electromagnetic relief valve（5）Export connected tank（9）；Upper mould（7）The second through hole（13）By connecing soon Joint and the first high pressure needle valve（6-1）Connection, the first high pressure needle valve（6-1）Export connected tank（9）.
- 3. the two-sided hydraulic forming device according to claim 1 for sheet metal, it is characterised in that：It is described to be processed Sheet metal（19）Positioned at upper mould（7）The first through hole of bottom（11）With lower mould（8）The fourth hole at top（15）Between, and Do not block mould（7）Third through-hole（10）.
- 4. the two-sided hydraulic forming device according to claim 3 for sheet metal, it is characterised in that：Described first is logical Hole（11）With sheet metal to be processed（19）Contact position is provided with rounding, the fourth hole（15）With metal foil to be processed Plate（19）Contact position is provided with rounding.
- 5. the two-sided hydraulic forming device according to claim 1 for sheet metal, it is characterised in that：Gold to be processed Metal thin plate（19）With upper mould（7）Bottom and lower mould（8）The first sealing ring is arranged with the contact surface at top（18）, formed dynamic close Envelope；Upper mould（7）With lower mould（8）Land area between be provided with the second sealing ring（17）, form static seal, and the second sealing ring（17） Positioned at third through-hole（10）With upper mould（7）Between outer wall.
- 6. the two-sided hydraulic forming device according to claim 1 for sheet metal, it is characterised in that：The lower mould （8）Lower mode cavity in be provided with mould.
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| CN201510387684.XA CN106311855B (en) | 2015-06-30 | 2015-06-30 | Two-sided hydraulic forming device for sheet metal |
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| CN201510387684.XA CN106311855B (en) | 2015-06-30 | 2015-06-30 | Two-sided hydraulic forming device for sheet metal |
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| CN106311855B true CN106311855B (en) | 2018-01-23 |
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| US2649067A (en) * | 1949-12-16 | 1953-08-18 | Kranenberg Heinrich Ewald | Device for making hollow bodies of sheet metal under hydraulic pressure |
| US5085068A (en) * | 1991-01-16 | 1992-02-04 | Extrude Hone Corporation | Die forming metallic sheet materials |
| DE4436436C2 (en) * | 1994-10-12 | 1996-08-22 | Hde Metallwerk Gmbh | Process for the hydrostatic forming of, in particular, flat sheets of cold-formable metal and device by carrying out the process |
| DE19734277C2 (en) * | 1997-08-07 | 2000-04-20 | Forschungsges Umformtechnik | Device for deep drawing a sheet using a pressure medium |
| CN200948478Y (en) * | 2006-06-16 | 2007-09-19 | 重庆工学院 | Plate mold-free forming device |
| US8701453B2 (en) * | 2010-12-23 | 2014-04-22 | Ford Global Technologies, Llc | Method of reducing cycle time in a hydro-mechanical forming process and a tool for hydro-mechanically forming a part |
| CN204974909U (en) * | 2015-06-30 | 2016-01-20 | 南京理工大学 | A two -sided hydraulic forming device for sheet metal |
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| CN106311855A (en) | 2017-01-11 |
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